1. Remember, for every scientific
hypothesis there exists an experiment such that a
"negative" result disproves it. If you don't find what
you're looking for-a "negative" result-you'd say with
confidence the hypothesis is wrong. "There exists
Extra-terrestrial humanoid life in the Universe" is not
a scientific hypothesis. If you don't find
Extra-terrestrials, it doesn't mean they don't exist-your
range of investigation could never be sufficiently large.
But as ridiculous as it sounds, " The Moon is made of
cheese" is a scientific claim assuming there
exists means to examine the Moon in sufficient detail. No
such test exists for Extra-terrestrials.

THOUGHT PROBLEM: WHAT IS THE TANGENT FOR FOLLOWING RUN AND
RISE VALUES? Compute rise/run, rise = 120 m, run = 1 kilometer.

4. added mass = (rise/run)*time. Think about why the mass
increases.

7. For 3.14159...., , the number of radians in a
half-circle, what are the two lengths? Think about #2
and other dimensionless ratios.

27;;;. See section 1.8. There are three displacements. With respect
to page, the first is vertical, the second horizontal
and the third lies 45 degrees above horizontal with magnitude 3.1
km. Find Dx and Dx, x and y
components of total displacement vector-D.
Clearly Dx = 4.0 + the x-component of third
displacement and Dy = 2.6 + y-component of third
displacement. Find vector-D magnitude using the
Pythagorean Th. Tan theta = Dx|/|Dy| where theta is related
angle. In what quadrant does vector -D point?